Where do i define the year end?

Hello Richard54, 

Welcome to the Community page, 

When you define the year in Quickbooks, its in the settings main cog wheel>account and settings> advanced top box, you put in the first month of your financial year and the system will go from the first of that month that's were you also choose the accounting type accrual or cash and it is  also where the close the books is and if you want the VAT set to no vat inclusive or exclusive it is all on that section to fill in what you want it all to show for you.